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src="https://tyunfile.71360.com/UploadFile/lscmjx/637247293743222656/8640266.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ohtqsut" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/lscmjx/637247293743222656/8640266.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="xgd2nkh" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>江蘇管道泵密封廠家直供,封</p><p><span>***更新：</span>2020-09-21 15:07:58</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="nmovxeg" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">漣水創(chuàng)密機(jī)械制造有限公司</a></p><p><span>聯(lián)系人：</span>袁經(jīng)理</p><p><span>郵箱: </span>lscmjx@163.com</p><p><span>電話: </span>15250888877</p><p><span>傳真: </span>153_</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>153-66621921</p><p><span>地址: </span>高溝鎮(zhèn)高揚(yáng)民營(yíng)經(jīng)濟(jì)產(chǎn)業(yè)園</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="32a8gyv" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="bfmof2l" class="box"><p><p> </p> <p> 一般情況下，介質(zhì)的溫度超過120℃即認(rèn)為是高溫密封。此時(shí)機(jī)械密封存在的主要問題有：(1)由于摩擦副端面溫度升高，導(dǎo)致密封端面間液膜氣化，摩擦系數(shù)隨之增大，江蘇管道泵密封廠家直供，磨損加劇，溫升加大，密封環(huán)產(chǎn)生熱變形或熱裂而失效；(2)機(jī)械密封中的輔助密封圈材料一般為橡膠或聚四氟乙烯，由于長(zhǎng)時(shí)間在高溫環(huán)境中，容易老化和分解，造成密封失效；(3)高溫下機(jī)械密封的彈性元件易產(chǎn)生疲勞和蠕變，使密封失效；(4)高溫會(huì)加劇金屬材料的腐蝕，縮短機(jī)封的使用壽命。機(jī)械密封的輔助沖洗系統(tǒng)是非常重要的，它可以有效的保護(hù)密封面，江蘇管道泵密封廠家直供，江蘇管道泵密封廠家直供，起到冷卻、潤(rùn)滑、沖走雜物等作用。江蘇管道泵密封廠家直供</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇管道泵密封廠家直供,封" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247293743222656/8640266.jpg"></div><p> 密封的靈活性選擇 </p> <p> 主軸的軸向和徑向運(yùn)動(dòng)需要與彈簧之間保持一定的靈活性，以保證接觸面之間的密封。然而，只能提供一定程度的靈活性。液泵的機(jī)械狀況及其長(zhǎng)度直徑比(一種主軸的直徑與其延伸長(zhǎng)度之比的衡量方式，比值越低越好)對(duì)密封的可靠性起著重要的作用。密封的靈活性一般由一個(gè)大型主彈簧和一系列小彈簧或波紋密封裝置提供保證。 </p> <p> <span style="font-size:12px;">化學(xué)工業(yè)所采用的傳統(tǒng)密封設(shè)計(jì)，其密封壓力施加于旋轉(zhuǎn)面上，這種密封稱之為旋轉(zhuǎn)密封，因?yàn)閺椈苫虿y密封裝置與主軸一起旋轉(zhuǎn)。比較新穎的設(shè)計(jì)，其彈簧或波紋密封裝置安裝于靜止面上。在現(xiàn)在的機(jī)械密封上，上述兩種密封方式都有非常普遍的應(yīng)用，這樣對(duì)于安裝具有一定的靈活性。</span> </p> <p> <span style="font-size:12px;">早期設(shè)計(jì)的許多機(jī)械密封采用單一的大型彈簧圍繞主軸排列，在液泵起動(dòng)過程中，可為密封面提供很強(qiáng)的密封力。密封的作用依靠主軸的旋轉(zhuǎn)來繃緊彈簧卷。</span> 江蘇污水密封廠家推薦O形密封圈安裝在溝槽和被密封面之間，有一定壓縮量，產(chǎn)生的反彈力給予光滑面和溝槽底面初始的壓縮應(yīng)力。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇管道泵密封廠家直供,封" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247298359511719/4792927.jpg"></div><p> 汽、柴油泵用機(jī)械密封 </p> <p> 多彈簧機(jī)械密封靜止結(jié)構(gòu) </p> <p> 該類泵的機(jī)械密封采用靜止結(jié)構(gòu)（溫度高于200℃泵采用波紋管結(jié)構(gòu)）。一是避免由于高速攪拌產(chǎn)生的熱量；二是防止彈簧傳遞扭矩。 </p> <p> 摩擦副材料的選取。 </p> <p> 對(duì)摩擦副材料的選取我們采用“WC-C”結(jié)構(gòu)。在選擇輔助密封材料時(shí)要考慮以下主要因素： </p> <p> 良好彈性，壓縮長(zhǎng)久變形小； </p> <p> 耐高溫，在高溫下不粘著； </p> <p> 與介質(zhì)相容，不易產(chǎn)生溶脹、硬化等； </p> <p> 摩擦系數(shù)小，有良好的機(jī)械性能。 </p> <p> 同過比較，我們選擇了耐溫較高的氟橡膠（溫度范圍-20℃-200℃）。 </p> <p> 輔助密封措施 </p> <p> 輕油泵機(jī)械密封輔助措施我們采用了密封腔夾套冷卻、無折流板急冷。 </p> <p> </p><p> 化工泵密封墊片選擇化工泵所抽取的介質(zhì)有腐蝕、揮發(fā)、等危險(xiǎn)性的存在，對(duì)泵體的密封性能要求，要比其他種類的泵高很多。化工泵常用的密封方法，有墊片密封法。墊片是離心泵靜密封的基本元件，使用范圍非常***。墊片的選型主要根據(jù)化工泵輸送介質(zhì)、溫度、壓力和腐蝕性等因素決定。 </p> <p> 當(dāng)化工泵輸送介質(zhì)，對(duì)溫度和壓力不高時(shí)，一般選用非金屬密封墊片； </p> <p> 當(dāng)化工泵輸送介質(zhì)為中壓高溫時(shí)，選用非金屬與金屬組合墊片。 </p> <p> 非金屬墊片在泵上應(yīng)用**為普遍，其材料一般為紙、橡膠和聚四氟乙烯。當(dāng)溫度不超過120℃，壓力在1.0Mpa以下時(shí)，一般選用青殼紙或模造紙墊片。 </p> <p> 如果當(dāng)化工泵輸送介質(zhì)為油，溫度在-30～110℃時(shí)，一般選用耐老化性能較好的丁晴橡膠。當(dāng)當(dāng)化工泵輸送介質(zhì)，在-50～200℃時(shí)，選用氟橡膠更為合適。因?yàn)樗四陀湍蜔嵬?，機(jī)械強(qiáng)度大也是其主要特征。 </p> <p> 在化工泵中由于所輸送介質(zhì)具有腐蝕性，所以一般選用聚四氟乙烯做為墊片材料。隨著化工泵使用的領(lǐng)域越來越多次，所輸送介質(zhì)種類也越來越多，因此在選用墊片材質(zhì)時(shí)應(yīng)查閱相關(guān)資料或通過實(shí)驗(yàn)后再做出正確選擇。 </p> <p> <br /> 裝O形圈的溝槽尺寸超差，尤其是深度尺寸過大時(shí)，使O形圈安裝后壓縮變形量不足而影響密封能力。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇管道泵密封廠家直供,封" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247266600576172/7557626.jpg"></div><p> 對(duì)石化行業(yè)來說，高溫重質(zhì)油泵用機(jī)械密封的選用一直是一大難題，例如催化裂化油漿泵、回?zé)捰捅谩⒊核妆?、初餾塔底泵、減壓塔底泵、延遲焦化的輻射進(jìn)料泵等。 </p> <p> 高溫重質(zhì)油泵的介質(zhì)具有以下共同的特點(diǎn): </p> <p> 溫度高:一般在340一400℃; </p> <p> 介質(zhì)粘度大:在溫度下一般運(yùn)動(dòng)粘度為(12一180)X 10一6m/s; </p> <p> 介質(zhì)有顆粒:如催化劑、焦炭、含有砂粒等其他雜質(zhì)。 </p> <p> 對(duì)于高溫重油介質(zhì)泵用機(jī)械密封?，F(xiàn)在各個(gè)企業(yè)都采用焊接金屬波紋管械密封?，F(xiàn)在使用情況較好的有DBM型、XL-604/606/609型、YH-604/606/609型等。波紋管材料采用八AM350、INCONEL718、哈氏B、C等不銹鋼;耐腐蝕高溫合金等，有的波片采用雙層結(jié)構(gòu)，使其承壓力從2MPa上升到5MPa，這些都有效解決了波紋紋管的失彈問題。機(jī)械密封的正常運(yùn)行必須具備以下條件：泵軸的竄量不能太大。江蘇管道泵密封廠家批發(fā)價(jià)格</p><p style="text-indent:25px">泵的密封對(duì)整個(gè)設(shè)備運(yùn)轉(zhuǎn)來說起著重要的作用，泵的密封系統(tǒng)泄漏將會(huì)嚴(yán)重影響到設(shè)備的正常運(yùn)轉(zhuǎn)。江蘇管道泵密封廠家直供</p><p> 潛污泵的作用是將污水中的雜質(zhì)通過的方式處理。然后排放掉，與清水泵的不同之處使其技術(shù)要求也不同于普通類型的設(shè)備，它的設(shè)計(jì)需要考慮到效率、磨損以及特殊環(huán)境：（1）導(dǎo)板等部件自動(dòng)與著脫耦合，耦合牢固可靠。（2）引出電纜應(yīng)采用YZW和YCW型橡套電纜或性能相同的電纜，且電纜的密封需采用水密頭式密封，確保潛污泵在使用過程中不至于發(fā)生泄露。（3）葉輪：葉輪設(shè)計(jì)成無堵塞型式，葉輪皆經(jīng)過靜平衡試驗(yàn)。葉輪材質(zhì)為HT200, 符合GB9439-88的要求，過流表面光潔無粘砂、尖角、冷隔、氣孔、砂眼等缺點(diǎn)。（4）主軸材質(zhì)選用3Cr13經(jīng)調(diào)質(zhì)處理，有效地、可靠地傳遞動(dòng)力。主軸與葉輪用鍵連接，以傳遞動(dòng)力。主軸與葉輪用葉輪螺母鎖緊并有止退墊片，可防止水泵倒轉(zhuǎn)，造成葉輪松脫。（5）密封環(huán)：材質(zhì)鑄造青銅，防止因銹蝕而與葉輪咬死。設(shè)有密封環(huán)可更大限度地減少內(nèi)部泄露，提高水泵的效率。（6）機(jī)械密封：采用兩套單端面非平衡型機(jī)械密封。油腔和電機(jī)室之間的上部密封單元由陶瓷，石墨組成；泵殼和油腔之間的下部密封單元由碳化硅，碳化硅組成，以防接觸介質(zhì)。 </p> <p> <br /> 江蘇管道泵密封廠家直供</p><p style="text-indent:25px">漣水創(chuàng)密機(jī)械制造有限公司致力于機(jī)械及行業(yè)設(shè)備，是一家貿(mào)易型公司。公司業(yè)務(wù)涵蓋輕型密封，中型密封，重型密封，小型水泵等，價(jià)格合理，品質(zhì)有保證。公司秉持誠(chéng)信為本的經(jīng)營(yíng)理念，在機(jī)械及行業(yè)設(shè)備深耕多年，以技術(shù)為先導(dǎo)，以自主產(chǎn)品為重點(diǎn)，發(fā)揮人才優(yōu)勢(shì)，打造機(jī)械及行業(yè)設(shè)備良好品牌。創(chuàng)密機(jī)械制造憑借創(chuàng)新的產(chǎn)品、專業(yè)的服務(wù)、眾多的成功案例積累起來的聲譽(yù)和口碑，讓企業(yè)發(fā)展再上新高。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1369491.html</p></div></div></div></div></div><div id="p3uoahj" class="page-right twoColRt"><div id="dnjbdvm" class="box01 margin10 clearfix"><h3><a 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